@type t() ::
  %Stripe.Params.Checkout.SessionCreateParams.ShippingOptions.ShippingRateData{
    delivery_estimate:
      Stripe.Params.Checkout.SessionCreateParams.ShippingOptions.ShippingRateData.DeliveryEstimate.t()
      | nil,
    display_name: String.t() | nil,
    fixed_amount:
      Stripe.Params.Checkout.SessionCreateParams.ShippingOptions.ShippingRateData.FixedAmount.t()
      | nil,
    metadata: %{required(String.t()) => String.t()} | nil,
    tax_behavior: String.t() | nil,
    tax_code: String.t() | nil,
    type: String.t() | nil
  }